Microsoft released Windows 10 for PCs build 14901 today, the first Insider Preview build since the Anniversary Update was launched last Tuesday. The company noted that it might take a few hours for the build to show for everyone.
Improving Product Education: As part of an effort to explore new ways of educating our customers on features in Windows 10 – we are testing out new notifications within File Explorer. They’re designed to help customers by providing quick, easy information about things they can do or new features they can try to have a better experience with Windows 10. If you want to opt out of these notifications, you can do so by unchecking ‘Show sync provider notifications’ from the Options menu in the File Explorer View tab.
Dona Sarkar, head of the Windows Insider Program, took the time to mention Windows 10 Mobile, which was the one version of Windows 10 that didn't get an Anniversary Update last week. She said that the team is "laser-focused" on getting the AU to Mobile, and she thinks that they're almost ready. According to Dona, you can help by installing build 14393.67 on your phone and submitting feedback.
Source: Windows Blog